bzip2 Decompression File Overwrite Vulnerability

BID:4774

Info

bzip2 Decompression File Overwrite Vulnerability

Bugtraq ID: 4774
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: May 20 2002 12:00AM
Updated: May 20 2002 12:00AM
Credit: Discovery of this issue is credited to Volker Schmidt and Philippe Troin.
Vulnerable: bzip2 bzip2 1.0.1
- FreeBSD FreeBSD 4.5
- FreeBSD FreeBSD 4.4
- Trustix Secure Linux 1.5
- Trustix Secure Linux 1.2
- Trustix Secure Linux 1.1
bzip2 bzip2 1.0
bzip2 bzip2 0.9.5 d
bzip2 bzip2 0.9.5 c
bzip2 bzip2 0.9.5 b
bzip2 bzip2 0.9.5 a
bzip2 bzip2 0.9 c
bzip2 bzip2 0.9 b
bzip2 bzip2 0.9 a
bzip2 bzip2 0.9
Not Vulnerable: bzip2 bzip2 1.0.2
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0
+ Debian Linux 3.0
- FreeBSD FreeBSD 4.5
- FreeBSD FreeBSD 4.5
- FreeBSD FreeBSD 4.4
- FreeBSD FreeBSD 4.4
+ Ubuntu Ubuntu Linux 5.0 4 powerpc
 + Ubuntu Ubuntu Linux 5.0 4 powerpc
 + Ubuntu Ubuntu Linux 5.0 4 i386
 + Ubuntu Ubuntu Linux 5.0 4 i386
 + Ubuntu Ubuntu Linux 5.0 4 amd64
 + Ubuntu Ubuntu Linux 5.0 4 amd64
 + Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 + Ubuntu Ubuntu Linux 4.1 ia32

Discussion

bzip2 Decompression File Overwrite Vulnerability

bzip2 is an open-source file compression/decompression utility for Unix and Linux variants.

bzip2 does not decompress files securely. When a file is decompressed, the program does not check to see if the file already exists, potentially allowing files to be overwritten without warning during the decompression.

Exploit / POC

bzip2 Decompression File Overwrite Vulnerability

There is no exploit code required.

Solution / Fix

bzip2 Decompression File Overwrite Vulnerability

Solution:
Upgrades are available:


bzip2 bzip2 0.9 c

bzip2 bzip2 0.9 b

bzip2 bzip2 0.9

bzip2 bzip2 0.9 a

bzip2 bzip2 0.9.5 a

bzip2 bzip2 0.9.5 b

bzip2 bzip2 0.9.5 d

bzip2 bzip2 0.9.5 c

bzip2 bzip2 1.0

bzip2 bzip2 1.0.1

References

bzip2 Decompression File Overwrite Vulnerability

References:

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